Bernard Arthur Gordon Horsfall (20 November 1930 – 28 January 2013) was an English actor of stage and screen. Early life Horsfall was born in Bishop's Stortford, Hertfordshire, and educated at Rugby
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95de28423ca7e1383e906e8921e050af6e752c1c226a2f78c113f8f942c5ae84. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a152eb08-c825-46a8-a37e-788b9cc879fc.json and https://artists.proofprofile.net/proofs/artist/a152eb08-c825-46a8-a37e-788b9cc879fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).